98271db4d5
Define a parameter which indicates the maximum number of sockets in a system, and use this to size the zone allocators used for sockets and for certain PCBs. Convert PF_LOCAL PCB structures to be type-stable and add a version number. Define an external format for infomation about socket structures and use it in several places. Define a mechanism to get all PF_LOCAL and PF_INET PCB lists through sysctl(3) without blocking network interrupts for an unreasonable length of time. This probably still has some bugs and/or race conditions, but it seems to work well enough on my machines. It is now possible for `netstat' to get almost all of its information via the sysctl(3) interface rather than reading kmem (changes to follow).
113 lines
4.1 KiB
C
113 lines
4.1 KiB
C
/*
|
|
* Copyright (c) 1982, 1986, 1989, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)udp_var.h 8.1 (Berkeley) 6/10/93
|
|
* $Id: udp_var.h,v 1.14 1997/09/07 05:26:51 bde Exp $
|
|
*/
|
|
|
|
#ifndef _NETINET_UDP_VAR_H_
|
|
#define _NETINET_UDP_VAR_H_
|
|
|
|
/*
|
|
* UDP kernel structures and variables.
|
|
*/
|
|
struct udpiphdr {
|
|
struct ipovly ui_i; /* overlaid ip structure */
|
|
struct udphdr ui_u; /* udp header */
|
|
};
|
|
#define ui_next ui_i.ih_next
|
|
#define ui_prev ui_i.ih_prev
|
|
#define ui_x1 ui_i.ih_x1
|
|
#define ui_pr ui_i.ih_pr
|
|
#define ui_len ui_i.ih_len
|
|
#define ui_src ui_i.ih_src
|
|
#define ui_dst ui_i.ih_dst
|
|
#define ui_sport ui_u.uh_sport
|
|
#define ui_dport ui_u.uh_dport
|
|
#define ui_ulen ui_u.uh_ulen
|
|
#define ui_sum ui_u.uh_sum
|
|
|
|
struct udpcb {
|
|
/* XXX - these should be by reference so we can do options quickly */
|
|
struct ip udb_ip;
|
|
struct udphdr udb_uh;
|
|
struct sockaddr_in udb_conn;
|
|
struct in_hostcache *udb_hc;
|
|
struct mbuf *udb_queue;
|
|
};
|
|
#define inptoudpcb(inp) ((struct udpdb *)(inp)->inp_ppcb)
|
|
|
|
struct udpstat {
|
|
/* input statistics: */
|
|
u_long udps_ipackets; /* total input packets */
|
|
u_long udps_hdrops; /* packet shorter than header */
|
|
u_long udps_badsum; /* checksum error */
|
|
u_long udps_badlen; /* data length larger than packet */
|
|
u_long udps_noport; /* no socket on port */
|
|
u_long udps_noportbcast; /* of above, arrived as broadcast */
|
|
u_long udps_fullsock; /* not delivered, input socket full */
|
|
u_long udpps_pcbcachemiss; /* input packets missing pcb cache */
|
|
u_long udpps_pcbhashmiss; /* input packets not for hashed pcb */
|
|
/* output statistics: */
|
|
u_long udps_opackets; /* total output packets */
|
|
u_long udps_fastout; /* output packets on fast path */
|
|
};
|
|
|
|
/*
|
|
* Names for UDP sysctl objects
|
|
*/
|
|
#define UDPCTL_CHECKSUM 1 /* checksum UDP packets */
|
|
#define UDPCTL_STATS 2 /* statistics (read-only) */
|
|
#define UDPCTL_MAXDGRAM 3 /* max datagram size */
|
|
#define UDPCTL_RECVSPACE 4 /* default receive buffer space */
|
|
#define UDPCTL_PCBLIST 5 /* list of PCBs for UDP sockets */
|
|
#define UDPCTL_MAXID 6
|
|
|
|
#define UDPCTL_NAMES { \
|
|
{ 0, 0 }, \
|
|
{ "checksum", CTLTYPE_INT }, \
|
|
{ "stats", CTLTYPE_STRUCT }, \
|
|
{ "maxdgram", CTLTYPE_INT }, \
|
|
{ "recvspace", CTLTYPE_INT }, \
|
|
{ "pcblist", CTLTYPE_STRUCT }, \
|
|
}
|
|
|
|
#ifdef KERNEL
|
|
extern struct pr_usrreqs udp_usrreqs;
|
|
|
|
void udp_ctlinput __P((int, struct sockaddr *, void *));
|
|
void udp_init __P((void));
|
|
void udp_input __P((struct mbuf *, int));
|
|
#endif
|
|
|
|
#endif
|